Letter X – Dictionary of Automotive Terms
XOriginally this letter indicated experimental vehicles, but later came to indicate an exotic or unusual vehicle.
- X engine
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See
- Xenon
- A colorless, odorless gas used in electric luminescent tubes to provide a bright light; a xenon stroboscope for ignition timing is strong enough to use in daylight
- X-flow cylinder head
- X-frame
- A frame design shaped like an elongated letter X that narrows to a strong junction at the center section; it usually has three or more crossmembers to provide torsional stability but there are no crossmembers in the center section of the vehicle
- X Litre Engine
- The total displacement of an engine expressed in litres. This is the total volume within an engine devoted to the combustion which produces power.
- XLR
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Click image for books on
Cadillac XLRA model of automobile manufactured by the Cadillac division of General Motors from 2004-current
X-rays
- X tire
- Michelin X Radial tires.
- Xtracab
- A type of pickup truck (by Toyota) which has a second row of seating; but unlike a crew cab (which has four full size doors) it has a half-door that can be opened only after the main door is opened. The seating is usually a little more cramped than in a crew cab. Also called Club Cab, Extended Cab, King Cab, Access Cab, SuperCab, or Cab Plus
- X-type engine
- An engine in which the Cylinders occur in four rows set at an angle from each other with the crankshaft running through the intersection of the X. The single crankshaft is turned by all banks of cylinders.
- X-type frame
- A frame design shaped like an elongated letter X that narrows to a strong junction at the center section; it usually has three or more crossmembers to provide torsional stability but there are no crossmembers in the center section of the vehicle
X-valve
There are two kinds of valves in a car, intake and exhaust. The intake valves allow oxygen and fuel into the cylinder head and the exhaust valves allow the used-up gases to exit.
Xylene
(C6H4(CH3)2) Colorless liquid of the aromatic group of hydrocarbons made from the catalytic reforming of certain naphthenic petroleum fractions. Used as high-octane motor and aviation gasoline blending agents, solvents, chemical intermediates. Isomers are metaxylene, orthoxylene, paraxylene. Highly valued as a Petrochemical feedstock. Xylene is highly photochemically reactive and, as a constituent of tailpipe emissions, is a contributor to smog formation.
